DRIVE FOR ELECTRIC accountability mechanisms

摘要

The invention relates to the field of controlled electric drive and may be used in electric drives of mechanisms responsible continuous, process conditions which do not allow unscheduled stoppages during short power disturbances. Task - increasing the reliability of the drive smooth by increasing the alignment precision current rectifiers primary and backup. The problem is solved in that the known frequency converter 12 is further provided with first and second current sensors 13, voltage regulator 14 and the booster transformer 15 with two windings. The claimed device allows to improve the reliability of smooth operation of the variable frequency drive mechanisms responsible for voltage fluctuations at the power inputs by increasing the alignment precision currents primary and backup rectifier, which leads to uniform loading of the latter with high accuracy. Alignment of the currents and voltages at the inputs of the main and backup rectifiers is carried out by adding the algebraic voltage from the main power supply and the input voltage to the primary winding of the boost transformer, a voltage regulator is formed by a command from the control unit. 1 yl.